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      <title>17.8.&nbsp;小结</title>
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                  <h2 class="title"><a name="plural.summary"></a>17.8.&nbsp;小结
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            <p>这一章中我们探讨了几个不同的高级技术。它们并不都适用于任何情况。</p>
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         <p>你现在应该能自如应用如下技术：</p>
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               <li>应用<a href="stage1.html" title="17.2.&nbsp;plural.py, 第 1 阶段">正则表达式进行字符串替换</a>。
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               <li>将<a href="stage2.html" title="17.3.&nbsp;plural.py, 第 2 阶段">函数当作对象</a>，把它们存于列表中，把它们赋值给变量，并通过变量来调用它们。
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               <li>构建<a href="stage3.html" title="17.4.&nbsp;plural.py, 第 3 阶段">应用 <tt class="literal">lambda</tt> 的动态函数</a>。
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               <li>构建<a href="stage4.html" title="17.5.&nbsp;plural.py, 第 4 阶段">闭合</a>，将外部变量作为常量构建动态函数。
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               <li>构建<a href="stage6.html" title="17.7.&nbsp;plural.py, 第 6 阶段">生成器</a>，进行逻辑递增操作并在每次调用时返回不同值的恢复执行函数。
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         <p>抽象化，动态构建函数，构建闭合以及应用生成器能够使你的代码更加简单化、可读化、灵活化。你需要在简洁和功能实现两方面进行平衡。</p>
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